دانلود رایگان مقاله لاتین چسب رسانا ناشی از نیروی موئینگ از سایت الزویر
عنوان فارسی مقاله:
رسانایی ارتقا یافته در چسب رسانای سه تایی ناشی از نیروی موئینگی جاذب
عنوان انگلیسی مقاله:
Enhanced conductivity induced by attractive capillary force in ternary conductive adhesive
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
The development of highly conductive materials has received much attention in electronic packaging due to an increasing demand for high power electronics [1,2]. Conductive particle filled polymer is the most widely used thermal interface material (TIM) because of its low cost, ease of assembly, and re-workability [3,4]. The electrical and thermal performances are significantly influenced by the formation of a particle conductive network, which has been verified by the theoretical model of percolation theory [1,5]. However, in order to achieve a percolative network, a sufficiently high filler loading is required. Commercial silver epoxy as conductive adhesive contains over 20 vol% of silver particles. Table S1 lists state of the art commercial silver epoxy pastes. Thus, reducing filler concentration while maintaining the same level of conductivity is one of the challenging issues for polymer composites. Referring to the colloidal system, the bulk conductivity enhancement is linked to the formation of a colloidal gel but weakly dependent on filler volume fraction [6,7]. The three dimensional gel networks serve as conducting pathways for electrons and phonons. This inspires the idea to improve the system conductivity by the approach of colloidal gelation at low filler loading. There is an understanding that gelation could be controlled by tuning the inter-particle attraction even at an extremely low volume fraction [8]. According to the attraction-density (U-F) state diagram [9], for low and moderate particle densities, strength of interaction potential plays a dominant role in forming either open clusters or compact aggregation. With gradually increasing the inter-particle attraction, particles grow into transient clusters, a percolative network and a stress-bearing gel network [10]. Meanwhile, morphology of the suspension transits from a fluid-like state to a solid-like state [11].
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کلمات کلیدی:
High performance electrical conductive composites with ... - IEEE Xplore ieeexplore.ieee.org/iel7/6905925/6922536/06922660.pdf?arnumber=6922660 Scheme 1. Illustration of jamming induced percolation reduction in polymer ... capillary force in a liquid based-suspension. Capillary ... Such capillary attractive force could jam the .... not only to enhance the percolative electrical conductivities,. Sol-Gel Processing for Conventional and Alternative Energy https://books.google.com/books?isbn=1461419573 Mario Aparicio, Andrei Jitianu, Lisa C. Klein - 2012 - Technology & Engineering In PIL water retention tests the membranes lost more than 80% PLI, causing severe conductivity drop [95]. ... in enhancing conductivity and preventing PLI release of PLI due to capillary forces in ... And finally silica-immobilized imidazole water-free ionic conductors are an attractive approach for high temperature operation. Structure of Particle Networks in Capillary Suspensions with Wetting ... pubs.acs.org/doi/abs/10.1021/acs.langmuir.5b04246 by F Bossler - 2016 - Cited by 11 - Related articles Jan 25, 2016 - Enhanced conductivity induced by attractive capillary force in ternary ... Highly conductive, printable pastes from capillary suspensions. Mass Transfer: Principles and Operations https://books.google.com/books?isbn=812034541X A. P. SINHA, PARAMESWAR DE - 2012 - Technology & Engineering The carbon aerogel- carbon paper composites are attractive materials for many ... from collapsing due to capillary forces associated with solvent evaporation. ... as the addition of inorganic particles to polymers can enhance conductivity, ... Progress in Electrorheology: Science and Technology of ... https://books.google.com/books?isbn=1489910360 F.E. Filisko, K.O. Havelka - 2013 - Science Frequently, the fluid conductivity doubles every 5 degrees. ... polarization.15 Polar activators are speculated to enhance ionic migration or alignment of dipoles. One theory considers the capillary forces of water in ER fluids. ... industry, such as low conductivity and insolubility, are attractive for electrorheological materials. Conductivity Enhancement in Carbon Nanocone Adhesive by Electric ... pubs.acs.org/doi/abs/10.1021/am100990c?src=recsys Jan 26, 2011 - Electrical Conductivity Enhancement of Polymer/Multiwalled Carbon Nanotube ... Enhanced conductivity induced by attractive capillary force in ...
